Friedrich and Charlotte just enter the cave when Roman runs out of it without the treasure. Roman locks the door. Beatrice tells both the others who professor Loos really is. They don't get the door open and their cell phone has no reach. It's getting cold in the cave and they come near each other for body heat. Luisa misses her father and Werner starts to miss Charlotte. Next day: Nils and David hear Friedrich shouting. They free the closed up trio. Beatrice suspects Friedrich of positive feelings for Charlotte. Will Friedrich marry Beatrice to proof her wrong? Natascha panics and blames herself for Tina's condition. Michael comforts her and informs her that Tina is on the way to get over her anaphylactic shock. He advises her a first aid course. Tina's headache is gone. Natascha supports her at home by cooking and cleaning up. Norman promises to do a good word for Natascha towards mayor André in the case of the center for alternative medicine. André has plans for Bichlheim. ...